package com.atguigu.springcloud;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;

/**
 * @author jzx
 * @create 2022-10-29-17:35
 */
@SpringBootApplication
@EnableEurekaClient         // 本服务启动后会自动注册进 eureka 服务中
@EnableCircuitBreaker       // 对 hystrixR 熔断机制的支持
public class PaymentHystrixMain8001 {

    public static void main(String[] args) {
        SpringApplication.run(PaymentHystrixMain8001.class, args);
    }

    /**
     * 此配置是为了服务监控而配置，与服务容错本身无关， springcloud 升级后的坑
     * ServletRegistrationBean 因为 springboot 的默认路径不是 "/hystrix.stream"
     * 只要在自己的项目里配置上下面的 servlet 就可以了
     */
    @Bean
    public ServletRegistrationBean getServlet() {
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings( "/hystrix.stream" );
        registrationBean.setName( "HystrixMetricsStreamServlet" );
        return registrationBean;
    }

}
